Where Should I Start?

I must admit I have always used the wordpress platform to build my sites. Like many of the other new people I don't know a whole ton about how to use the Live Journal Platform...yet. My latest website, Adwords Management was built completely on wordpress. How hard would it be to make this site in Live Journal. I'm not sure if I should use a theme that looks similar to this one or if I should just find a new theme..

Is there anyone else here who has recently transformed from a WP user to Live Journal? If so, I'd love to hear your suggestions on how I should get on the fast track of completely understanding and using Live Journal. Any theme suggestions would be awesome!